The deer is bounding away from the cheetah.
When muscles get used to doing an exercise a lot, and remember the exercise.
Using an exercise bike works your glutes and hip flexors, plus leg muscles.
Shuttle run is a type of exercise that is used mostly by athletes and coaches. The muscles this exercise uses is the rectus femoris; a quadricep muscle.
Plyometric exercises
The exercise ball will strengthen different muscles depending on how you use it. It's probably most popular and frequently used for an abdominal work out.
it keeps the muscles strong becuase they and allways being used if you exercise and the joints and flexible because they and always being moved about
it is an exercise that uses uses muscles from all major muscles. Legs, back, core, chest, and arms are all used.
The muscles used in Pec Fly Exercise are the pectorals (Chest muscles) and deltoids (Shoulder muscles). If done properly and the right sized weight for your ability then you should feel the pulling in your chest and your shoulders.
The muscles used in the leg press exercise are your Quads primarily. Hamstring gets a good work out too.
Muscles get their strength from exercise.
With exercise bands, you can work out tons of muscles. Muscles that you can work out are arm muscles, leg muscles and back muscles. With leg muscles, you can work out the thighs, and calves muscles.